When glycogen synthase is phosphorylated
A) its activity decreases.
B) its activity increases.
C) its activity is unaffected.
D) That enzyme doesn't get phosphorylated.

Question

Quizplus · Accepted Answer

When glycogen synthase is phosphorylated, its activity decreases. This is because phosphorylation adds a negatively charged phosphate group to the enzyme, which can interfere with the binding of substrates and the formation of glycogen. Thus, the enzyme becomes less active and less efficient in its function of synthesizing glycogen.

When Glycogen Synthase Is Phosphorylated